Created
April 3, 2018 13:49
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Lab3
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#define _CRT_SECURE_NO_WARNINGS | |
#include <stdio.h> | |
#include <locale.h> | |
#include <stdlib.h> | |
#include <time.h> | |
struct QueueEl { | |
int data; | |
QueueEl* next; | |
}; | |
struct Queue { | |
QueueEl* first; | |
QueueEl* last; | |
int count; | |
}; | |
Queue create() | |
{ | |
Queue *queue = NULL; | |
queue = (Queue*)malloc(sizeof(Queue)); | |
queue->last = NULL; | |
queue->first = NULL; | |
queue->count = 0; | |
return *queue; | |
} | |
bool isEmpty(Queue *queue) | |
{ | |
if (queue->count == 0) | |
{ | |
return true; | |
} | |
else | |
{ | |
return false; | |
} | |
} | |
void push(Queue *queue, int value) | |
{ | |
QueueEl* current = (QueueEl*)malloc(sizeof(QueueEl)); | |
current->data = value; | |
current->next = NULL; | |
if (queue->count == 0) | |
{ | |
queue->last = current; | |
queue->first = queue->last; | |
} | |
else | |
{ | |
queue->last->next = current; | |
} | |
queue->last = current; | |
queue->count++; | |
} | |
void pop(Queue *queue) | |
{ | |
if (isEmpty(queue) == true) | |
{ | |
//printf("Очередь пуста!\n"); | |
return; | |
} | |
QueueEl *current = queue->first; | |
queue->first = queue->first->next; | |
free(current); | |
queue->count--; | |
} | |
void show(Queue *queue) | |
{ | |
if (isEmpty(queue) == true) | |
{ | |
printf("Очередь пуста!\n"); | |
return; | |
} | |
QueueEl *current = queue->first; | |
while (current->next != 0)//поставить здесь корректное условие, чтобы учитывалось, что очередь может быть заполнена | |
{ | |
printf("%c\n", current->data); | |
current = current->next; | |
} | |
printf("%c<-последний элемент\nНажмите 'enter', чтобы продолжить.\n", current->data); | |
} | |
void destroy(Queue *queue) | |
{ | |
free(queue); | |
queue = NULL; | |
} | |
void main() | |
{ | |
setlocale(LC_ALL, "rus"); | |
Queue queue = create(); | |
printf("Чтобы выйти из программы нажмите 'q'.\nДля продолжения нажмите 'enter'.\n"); | |
srand(time(NULL)); | |
while (getchar() != 'q') | |
{ | |
int i = rand() % 25 + 65; | |
if (i % 2 == 0) | |
{ | |
push(&queue, i); | |
} | |
else | |
{ | |
pop(&queue); | |
} | |
show(&queue); | |
} | |
} |
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